Automatic current-interrupter.



No. 672,| 95. Patented Apr. I6, |901.

' H. SHOEMAKER.

` AUTOMATIC CURRENT INTERRUPTER.

LApplicaton filed Nav. 28, 1900.]

(No Model.)

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NITED STATES PATENT OFFICE.

HARRY SHOEMAKER, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR OF ONE- p HALF TO GUSTAVE P. GEHRING, OF SAME PLAGE.

AUTOMATIC CURRENT-INTERRUPTER.

SPECIFICATION forming part of Letters Patent No. 672,195, dated April 16, 1901.

Application filed November 28, 1900. Serial No. 38,018. (No model.)

T MZ whom, t may 00u/cern: which .is externally threaded to enter the Be it known that I, HARRY SHOEMAKER, a bracket and internally threaded to receive citizen of the United States, residing at Philathe adjusting-screw 9, which is provided with delphia, in the county of Philadelphia and a lock-nut to secure it in its adjusted po- 55 5 State of Pennsylvania, have invented certain -sition. The lower end ot' this adjustingnew and useful Improvements in Automatic screw E) is connected by a ball-and-socket Current-Interrupters; and I do declare the joint 12 to the free end of the lever 13, fnlfollowing to be a full, clear, and exact decrumed in the lower end of the bracket 6, and scription of the invention, such as will enable 14 denotes a platinum-tipped contact-point 6o Io others skilled in the art to which it appertains pivoted to the lever 13 and extending through to make and use the same. a guide-orifice in the bridge of the bracket 6,

My invention relates to certain novel imas shown. 15 designates a correspondinglyprovements in independent automatic curalined and platinum-tipped contact-rod havrent-interrupters for the primary circuit ing a vertical movement in the guide-socket 65 I5 of Ruhmkorff or induction coils, and the oh- 16, fixed in the top plate 2, and the upper face ject is to provide an independent high-freof this guide-socket 16 is provided with three quency make-and-break7 for the batteryequidistant hemispherical lugs 17 17 17, (see circuit of the induction-coil that shall be au- Fig. 2,) which project into the path of two tornatic, reliable, and independent ofthe pricorresponding lugs 18 1S, (see Fig. 3,) formed 7o 2o mary or energizing circuit of the coil itself. on the bottom face of the collar 19, fixed on To theseends my invention consists in the the rod 15, and 2O denotes a female coupling construction, combination, and arrangement fixed on the rod 15 above the collar 19 to relof the several elements of the device, as will ceive the lower end of the shaft 21 of the be hereinafter more fully described, and parelectromagnetic motor 22, the lower end of 75 25 ticularly pointed out in the claims. said shaft being formed with a transverse or In the accompanying drawings the same diametrical slot 23, through which the coupreference characters indicate the same parts ling-pin 24, xed in the coupling 20, passes, of the invention. the construction being such that while the Figure 1 is a side elevation, partly in secmotor-shaft revolves it has no vertical or end 8o 3o tion, ofmy improved automatic current-inmovement, while the driven shaft or rod 15 terrupter shown in connection with its proper does have a vertical or end movement in adcircuits, which are in diagram. Figs. 2 and dition to its rotary movement. 3 are detail views of the same, and Fig. 4 is 25 designates a spiral spring encompassing an enlarged detail section of the motor-coupthe motor-shaft 21 between the collar 26 on 85 ling. the motor-shaft and a corresponding collar 1 designates the base-plate, and 2 the top 26 on the coupling 20, the office of which is plate, which forms the coverfor the cell 3 and to provide for the return movement of the which is adapted t0 contain any suitable lqdownward motion of the rod 15 after it has uid dielectric, such as a heavy oil or the like, been forced upward by the action of the hemi- 9o 4o and 4 1 denote the bolts which clamp the cell spheres.

or jar between the plates 1 and 2. This top The motor 22 is provided with the usual plate (and cell) may be of hard rubber, glass, binding-posts 27 and 28 and is mounted on or any suitable electric non-conductor, and the standards 29 30, fixed to the top plate 2, in it is mounted the binding-post 5, from the post 29 being provided with a binding- 95 which a conductor extends to one pole of the screw 31, from which a conductor extends to primary circuit of a Ruhmkorff or induction a suitable batt-ery, and from this battery the coil. usual conductor extends to the remaining 6 denotes a depending bracket, one arm of pole of the primary circuit of the inductionwhich is secured to the plate 2 and the post .coil heretofore mentioned, the said circuit roo 5o 5 by the screw 7 and the other arm is likebeing completed through the motor-frame, wise secured to said plate by a hollow bolt 8, shaft,and rod land thence through the alined contact-point 1A, bracket 6, and post 5, so that it will be seen thatV the primary circuit of the coil is entirely separate and independent of the motor-circuit, and thus it will be understood that any defect in the one will not affeet the other circuit-an advantage not possessed by an apparatus in which the interrupter is in the primary circuit of the coil, and consequently both dependent on the same battery.

From this description the operation of my interrupter is readily understood and its numerous advantages fully appreciated; but, briefly stated, it is as follows: As the motor is revolved the spring-actuated collar 19, carrying the rod 15, which is guided in the socket 1G, is revolved, and by reason of the spring and the hemispherical lugs 17 of the socket 16 and the corresponding lugs 18 of the collar 19 the rod 15 is raised or lowered or reciprocated six times to one revolution of the motor, thus causing a quick making and breaking of the circuit or interrupting ofthe current through the platinum-tipped contactpoint 1A, carried by the fulcrumed lever 13, which holds the point at the proper adjustment by means of the adjusting-screw 9.

In the accompanying drawings I have shown my invention in the best form now known to me; but very many changes in the details may be made within the skill of a competent mechanic without departing from the principle or spirit of the invention as set forth in the claims at the end of this specication.

Having thus fully described my invention, what l claim as new, and desire to secure by Letters Patent of the United States, is-

l. A stationary contact-point, a movable alined contact-rod and means for simultaneously imparting a reciprocating and a rotary movement to said rod, as and for the purpose set forth.

2. A stationary contactpoint, means for adjusting said point, an alined contact-rod and means for simultaneously reciprocating and rotating said rod, substantially as and for the purpose set forth.

3. An electric circuit, comprising a stationary contact-point and an alined contact-rod, of means, independent of said electric circuit for sim ultaneously rotating and reciprocating said contact-rod, substantially as and for the purpose set forth.

4t. A make-and-break Contact device arranged to interrupt the primary circuit of an induction-coil, and a prime motor adapted to operate said contact device, substantially as and for the purpose set forth.

5. A prime motor, a reciprocating` contactrod carried by said motor and a stationary contact-point arranged in the path of said contact-rod, as and for the purpose set forth.

t'. A prime motor, a reciprocating conductor-rod rotated by said motor, and an adjustable contact-point arranged in the path of said reciprocating rod, substantially as and for the purpose set forth.

7. A movable contact-rod, a prime motor and means for imparting a reciprocating and a rotary movement to said rod and a stationary contact-point arranged in the path of said rod, as and for the purpose set forth.

S. The combination with the prime motor and its rotating shaft, of an alined conductor shaft or rod driven thereby and having an end movement in addition to its rotary movement, a-nd a conductorrod, insulated and alined in the path of said conductor-shaft, substantially as and for the purpose set forth.

ln testimony whereof l have hereunto set my hand in presence of two subscribing witnesses.

HARRY SHOEMAKER.

Witnesses:

GUs'rAvn P. GEHMNG, JOSEPH S. HAGAN. 

